Adast Essays

All of the temperatures were measured in degrees Celsius. Salts contain ions, which are charged particles. Sorry, but copying text is not allowed on this site. This can be qualitative and quantitative. During the experiment, the reaction took place in a glass beaker which theoretically is only an endothermic reaction and not a instant cold pack. However, it was discovered that just because it is the coldest does not necessarily mean it is the best.

We repeated each test 2 times, unless the 2 results were more than 0. We have placed cookies on your device to help make this website better. Important Information We have placed cookies on your device to help make this website better. Further testing could go into finding if changing the substance in the big and small bag has an effect on the temperature outputted. We will write a custom sample essay on Endothermic Reaction specifically for you.

ammonium nitrate and water coursework

All equipment was collected and calculations regarding coursewori amount 0. Your Answer is very helpful for Us Thank you a lot! Instead your looking for a plateau. To be classified as an effective instant cold pack it needs to remain at a reasonable temperature safely regulated output: Tfinal – Tinitialto measure the amount of heat exchanged between the system. Here are our results:. Salts contain ions, which are charged particles. Endothermic Reaction send By clicking “Send”, you agree to our terms of service and privacy policy.

ammonium nitrate and water coursework

The Effect Ammonium Nitrate has on the Temperature of Water During this lab students are going to mix water and ammonium nitrate one gram at a time and observe the change in temperature that is occurring. If used correctly and immediately after an incident occurs, it can reduce swelling as well as tissue damage, blood clots, inflammation and muscle spasms.

  ANNOTATED BIBLIOGRAPHY CQU

Extended Experimental Investigation Essay

This is because more heat is involved in the first step, absorbing energy from the surroundings. Posted September 21, edited.

Even though the second step outputs heat, the first step absorbs more energy causing it to be an endothermic reaction and therefore cold to touch. Also you should be able to make comment on the two variables you have measured, viz temperature difference and weight mass of salt. Both experiment posters please note that when reporting experimental measurements you should report to a consistent accuracy broadly aand of decimal places.

Extended Experimental Investigation Essay Example for Free – Sample words

After performing the tests, the two best outcomes seen in graph 1 and table 1 were ammonium nitrate and potassium nitrate. When entropy is at a high enough level, it can overrides driving the heat flow essentially backward. You must be looking for the plateau curve, were the temp. Flush the eye well with water.

Flipside, if less energy is imputed and more energy is outputted than your Enthalpy change will be exothermic neg. A hypothesis for this lab could be if ammonium nitrate is added to water then the water temperature will decrease.

Go To Ammohium Listing Chemistry. Ammonium nitrate NH4NO3 as previously stated is the most common chemical to be used in the making of an instant ice pack.

  AUDLEY WEBSTER ESSAY CONTEST

Endothermic Reaction Essay Example for Free – Sample words

This qater the environment colder. So if you are measuring temperature to 0. It was hypothesised that ammonium nitrate would generate and remain at the lowest temperature out of the five different chosen chemicals. If you contact us after hours, we’ll get back to you in 24 hours or less.

Endothermic Reaction Essay

This means that for every gram added the temperature of the water went down. When a positive ion is attracted and comes into contact with a negative one it forms crystals. In terms of instant cold packs, the ingredients are waiting patiently in separate compartments in a highly ordered state.

ammonium nitrate and water coursework

The first step requires a lot a heat which is used to break the bond between the ions separating the solid crystal. An instant cold pack does not require refrigeration and can be stored for months and be able to produce cold temperatures ammonuim, anytime.

This can actually be causing the body more harm than good resulting in freezing of the skin. Here is a table of our results. Isotopes wouldn’t matter regardless.